Fluid Power Journal

Problem: Cylinder Extension

Given: Cylinder is 4″ x 20″ x 2″ Operating pressure is 100 psi No load on cylinder This cylinder is extending at a rate of 5 inches per …

Problem: Vacuum Regulators

I maintain a mobile medical unit (hospital), which is a large semi-truck that opens up to over 1,000 square feet for emergency medical usage. Along with all …

Problem: Building Anchor

This question varies a bit from the normal Air Teaser, however it still uses some of the same formulas that are used to determine a force to overcome motion. …

Problem: Vehicle Rod Sizing

In designing a vehicle to go down the road at 60 mph, one must know the drawbar pull of the vehicle. This is a combination of drag coefficient, rolling …

Problem: Standard Size Cylinder 3

Deadline past. Not available for submissions. Winner: Robert Justin Allison, CFPS, Butler, PA, Rotork Hiller Answered Correctly: George Fling, CFPS, Dallas, …

Problem: Pushing the Button

What will the cylinder do if the push button is pushed and held? What will the cylinder do if the push button is pushed and released with a 50-psi load on the …

Problem: Necessary Pressure

If the rotary actuator has four 4″ diameter cylinders as shown, what would be the necessary pressure to rotate the shaft with a torque of 5000 lb. in.? …

Problem: Size an Air Compressor and Receiver

A company has a machine that uses 50 cfm at 100 psi. Size an air compressor in SCFM that will have a duty cycle of 40%. Then size an air receiver in gallons …

Problem: Standard Size Cylinder 2

Deadline Past. Not Available for Submissions. Winner: Mike Stoltenow, CFPS, Comatrol, Easley, SC Answered Correctly: Edward Day, CFPPS, Norgren, Inc., …

Problem: Highest Pressure

Cylinders are 2″ x 10″ x 1″    •      Supply Pressure is 100 PSI Question:  What is the highest pressure that the gages A & B …

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